NL7602976A - Purification of condenser and boiler feed water - and a process for regenerating the bed of mixed ion exchange granules - Google Patents

Purification of condenser and boiler feed water - and a process for regenerating the bed of mixed ion exchange granules

Info

Publication number
NL7602976A
NL7602976A NL7602976A NL7602976A NL7602976A NL 7602976 A NL7602976 A NL 7602976A NL 7602976 A NL7602976 A NL 7602976A NL 7602976 A NL7602976 A NL 7602976A NL 7602976 A NL7602976 A NL 7602976A
Authority
NL
Netherlands
Prior art keywords
bed
hydrazine
boiler feed
feed water
soln
Prior art date
Application number
NL7602976A
Other languages
Dutch (nl)
Original Assignee
Crane Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Crane Co filed Critical Crane Co
Priority to NL7602976A priority Critical patent/NL7602976A/en
Publication of NL7602976A publication Critical patent/NL7602976A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J47/00—Ion-exchange processes in general; Apparatus therefor
    • B01J47/02—Column or bed processes
    • B01J47/04—Mixed-bed processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
    • B01J49/10—Regeneration or reactivation of ion-exchangers; Apparatus therefor of moving beds
    • B01J49/18—Regeneration or reactivation of ion-exchangers; Apparatus therefor of moving beds of mixed beds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Water By Ion Exchange (AREA)

Abstract

The mixt. is purified with a de-mineraliser comprising a mixt. of anion exchange granules (I) and cation exchange granules (II). After the water has passed through the bed, the latter is separated into a layer of (I) and a layer of (II) for regeneration. (I) is regenerated with caustic soda and then treated with an aq. hydrazine soln. After treatment, the hydrazine soln. is purified by passing it through a bed of a cation exchange resin of the hydrazine type and the purified soln. re-used to treat (I). The system is used to regenerate the de-mineraliser for condensed steam turbine water and to control the quality of boiler feed water e.g. in atomic power plants. The process keeps hydrazine losses to a min. as well as using the hydrazine as a reductant to remove Fe from (I) and enable the bed to maintain a high capacity at all times.
NL7602976A 1976-03-22 1976-03-22 Purification of condenser and boiler feed water - and a process for regenerating the bed of mixed ion exchange granules NL7602976A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7602976A NL7602976A (en) 1976-03-22 1976-03-22 Purification of condenser and boiler feed water - and a process for regenerating the bed of mixed ion exchange granules

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7602976A NL7602976A (en) 1976-03-22 1976-03-22 Purification of condenser and boiler feed water - and a process for regenerating the bed of mixed ion exchange granules

Publications (1)

Publication Number Publication Date
NL7602976A true NL7602976A (en) 1977-09-26

Family

ID=19825860

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7602976A NL7602976A (en) 1976-03-22 1976-03-22 Purification of condenser and boiler feed water - and a process for regenerating the bed of mixed ion exchange granules

Country Status (1)

Country Link
NL (1) NL7602976A (en)

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Legal Events

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